[turbofan] Move more type checks to the representation selector.

src/compiler/change-lowering.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/change-lowering.h"
 
 #include "src/address-map.h"
 #include "src/code-factory.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/linkage.h"
@@ skipping 15 matching lines @@
     case IrOpcode::kChangeBitToBool:
       return ChangeBitToBool(node->InputAt(0), control);
     case IrOpcode::kChangeBoolToBit:
       return ChangeBoolToBit(node->InputAt(0));
     case IrOpcode::kChangeFloat64ToTagged:
       return ChangeFloat64ToTagged(node->InputAt(0), control);
     case IrOpcode::kChangeInt31ToTagged:
       return ChangeInt31ToTagged(node->InputAt(0), control);
     case IrOpcode::kChangeInt32ToTagged:
       return ChangeInt32ToTagged(node->InputAt(0), control);
-    case IrOpcode::kChangeSmiToInt32:
-      return ChangeSmiToInt32(node->InputAt(0));
+    case IrOpcode::kChangeTaggedSignedToInt32:
+      return ChangeTaggedSignedToInt32(node->InputAt(0));
     case IrOpcode::kChangeTaggedToFloat64:
       return ChangeTaggedToFloat64(node->InputAt(0), control);
     case IrOpcode::kChangeTaggedToInt32:
       return ChangeTaggedToUI32(node->InputAt(0), control, kSigned);
     case IrOpcode::kChangeTaggedToUint32:
       return ChangeTaggedToUI32(node->InputAt(0), control, kUnsigned);
     case IrOpcode::kChangeUint32ToTagged:
       return ChangeUint32ToTagged(node->InputAt(0), control);
     case IrOpcode::kLoadField:
       return LoadField(node);
@@ skipping 217 matching lines @@
     Node* if_false = graph()->NewNode(common()->IfFalse(), branch);
     Node* vfalse = graph()->NewNode(common()->Projection(0), add);
 
     control = graph()->NewNode(common()->Merge(2), if_true, if_false);
     value = graph()->NewNode(common()->Phi(MachineRepresentation::kTagged, 2),
                              vtrue, vfalse, control);
   }
   return Replace(value);
 }
 
-Reduction ChangeLowering::ChangeSmiToInt32(Node* value) {
+Reduction ChangeLowering::ChangeTaggedSignedToInt32(Node* value) {
   return Replace(ChangeSmiToWord32(value));
 }
 
 Reduction ChangeLowering::ChangeTaggedToUI32(Node* value, Node* control,
                                              Signedness signedness) {
-  if (NodeProperties::GetType(value)->Is(Type::TaggedSigned())) {
-    return ChangeSmiToInt32(value);
-  }
-
   const Operator* op = (signedness == kSigned)
                            ? machine()->ChangeFloat64ToInt32()
                            : machine()->ChangeFloat64ToUint32();
 
   if (NodeProperties::GetType(value)->Is(Type::TaggedPointer()) &&
       NodeProperties::GetType(value)->Is(Type::Number())) {
     return Replace(graph()->NewNode(op, LoadHeapNumberValue(value, control)));
   }
 
   Node* check = TestNotSmi(value);
@@ skipping 402 matching lines @@
 }
 
 
 MachineOperatorBuilder* ChangeLowering::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8